Div C – High School
NC Essential Standards Alignment:
Chm.3.1, Chm.3.2, Science as Inquiry
See the National rules manual
Event Score Sheet:
National Event Page:
Splash goggles, lab coat or chemical apron with long sleeve shirt, covered legs, closed toed shoes, long hair tied back, and something to write with. Competitors should also bring the optional materials listed below, or they will be at a disadvantage.
NC Only: 2.b.ii,iii. Supervisor will provide 1M HCl and 1M NaOH. (8/1/17)
NC Only: 3. NC REGIONALS will only be focusing on parts 3.a&b.(Qualitative Analysis), 3.c.i (Plastics) and 3.e vi and vii (Seeds, Pollen, Tracks, and Soil). Other topics listed in the rules will not be covered at regionals, but MAY be covered at the state tournament. Additional questions may be asked on general lab safety and procedure and chemical and physical properties and common uses of the unknown substances in parts 3b and 3c. (9/7/17)
This is a Lab based event. Teams will be given a crime scenario which they will be asked to solve based on evidence they gather and test. Teams will then be asked to analyze the information they have gathered to identify a suspect and solve the crime.
Teams MUST bring chemical splash goggles, safety gear, and a writing instrument. Teams may also bring spot plates, test tubes and test tube holders or any containers in which they can perform the tests, popsicle sticks, spatulas, plastic spoons, tongs, etc. for handling materials, pH paper, a ruler, conductivity tester, thermometer, hand lenses or loupes, paper towels, a disposable cup for solid waste, writing instruments, 2 non-camera calculators, and 5 pages, both sides containing information in any form from any source. Sheet protectors are encouraged.
***SAFETY ISSUE*** In addition to OSHA approved chemical splash goggles with indirect vents, teams also MUST wear closed toed shoes, pants/skirts that cover legs to the ankle, AND a lab coat/apron that reaches below the knee or they will not be allowed to participate. Long hair must be tied back. In addition, any teams seen handling materials in an unsafe manner will be disqualified from the event.
Event Leaders will provide a proper lab environment, all evidence to be collected, additional equipment necessary to perform tests on the evidence, the official test and answer sheet.
High score wins. Points are earned for proper identification of evidence as well as analysis of the crime.
For NC Regionals ONLY, these sections will account for the following approximate percentages of the final score: Part A, 35%, Part B, 20%, Part C 15% and Part E 30%.
Be sure to follow all safety requirements! Students will not be allowed to participate without the proper safety equipment.
– Event leaders will not answer questions on testing procedures (for example- how to perform a burn test on fibers) nor will they provide a copy of the rules or a list of the possible unknowns. Teams should already know procedure, and should include a list of the possible unknowns in their allowed notes if they cannot remember. Event leaders WILL answer safety questions, and stop students from performing a test in an unsafe manner.
General sites on Forensics and Crime Busters
Forensic checklist of links, activities, and notes
Zeno’s Forensic site with links to real world stuff
Forensic Science Course Outline
Scienceman’s notes on Forensics
Real World—Articles on aspects of crime scene data collection
The Thin Blue Line. Descriptions of Blood, Bugs, DNA, and Ballistics
Forensics in the Classroom—activities!
Links to forensic activities for students
SO Sample exams for Forensics and other events
Polymers and Fibers:
American Chemistry—Teaching Plastics:
Plastics Info—video clips of how to determine densities of polymers
Polymer density lab
Microscopic Images of Fibers—search for the types of fibers and select the kind of microscopic technique for the image you want.
Animal Hair Images
Sample fiber identification flow chart
Intro to Chromatography
How To Do Paper Chromatography with students
How to calculate the Rf value for a chromatogram
Tutorial on Interpreting Mass Spectra
Basic info Mass spectroscopy
2014 State Forensics Test – powders, toolmarks/impressions, firearms/ballistics
2010 Regional Forensics Test- Stolen Steelers
2010 Crimebusters Regional Test
2013 Crimebusters State Test
2014 Crimebusters State Test
How to do a Fiber Burn Test
How to do Identify Polymers
How to perform powder tests
More Powder Tests
Teamwork is key to this event